In Euclidean Geometry, the sum of the interior angles of a triangle is equal to 180°. Which statement is true for Spherical Geometry?

Which representation has a constant of variation of -2.5

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')

Factor the polynomial 4x4 – 20x2 – 3x2 + 15 by grouping. what is the resulting expression? (4x2 + 3)(x2 – 5) (4x2 – 3)(x2 – 5) (4x2 – 5)(x2 + 3) (4x2 + 5)(x2 – 3)